It was about 20 years ago, in the midst of the Third Shinobi War, when Jiraya, the Great Toad Sage, was returning from a solo mission in the Land of Wind and came across a wounded woman. This woman had long red hair similiar to that of the shinobi who lived in the village of Uzushiogakure which had been destroyed a year earlier. As Jiraya cautiously approached the woman, he realized that the woman was a shinobi and wore the uniform of the almost exstinct Uzumaki clan. Jiraya immediately abandoned all caution and rushed to help the woman. When the woman saw Jiraya, recognition flooded into her face and ran towards the sage. At this moment Jiraya saw how bad the kunoichi's wounds were and that she was carrying a baby. Just as the two met, shuriken and kunai went flying as several Amegakure Shinobi apeared. The woman shouted at Jiraya "Save my child!" as she simaltaneously shoved the baby into Jiraya's arms and charged the enemies.
Jiraya was sucsesfully able to escape and safely return to Konha where he informed the Third Hokage of the events that had transpired. With the child was a piece of paper saying "Lillian Uzumaki daughter of Curran." Kushina Uzumaki was present at the meeting and identified Curran as her older sister who had been born ten years before Kushina. It was decided that for the remainder of the war Lillian would be placed in an orphanage and they would figure out what to do with him afterwards.
By time the war had ended Lilian was adopted by a family of shinobi who wanted a daughter. Lillian now had a loving family...
One peaceful night when Lillian was four years old, she was eating dinner with her parents when a loud deafening sound was heard. It sounded like a "roar." Her parents immediately checked outside and saw a huge monster, the Nine-Tailed Demon Fox. Lillian's parents immediately geared up, brought Lillian to the evacuation area for civilians and rushed off to defend Konha and their daughter from this attack. Unfortunately, Lillian's parents were among the many nameless shinobi to die that night.
After that night, Lillian was raised in the village orphanage. When she turned six years old, she went to the acadamy to become a shinobi like her parents. At the academy Lillian excelled and graduated within a year demonstrating her natural talents.